func (e *Engine) broadcastChanges() {
if e.ctx.Entity.IsDirty() {
log.Println("Entity diff dirty, broadcasting to clients...")
err := e.srv.Write(func(w io.Writer) error {
return builder.SendEntitiesDiffToClients(w, e.ctx.Entity.Flush())
})
if err != nil {
log.Println("Cannot broadcast entities diff:", err)
}
}
if e.ctx.Action.IsDirty() {
log.Println("Actions diff dirty, broadcasting to clients...")
err := e.srv.Write(func(w io.Writer) error {
return builder.SendActionsDone(w, e.clock.GetRelativeTick(), e.ctx.Action.Flush())
})
if err != nil {
log.Println("Cannot broadcast actions:", err)
}
}
}
return err
}
}
// Register new entity
req := ctx.Entity.Add(session.Entity, ctx.Clock.GetAbsoluteTick()) // TODO: move this elsewhere?
err = req.Wait()
log.Println("Entity registered!")
if err != nil {
return err
}
// Broadcast new entity to other clients
log.Println("Flushing entities diff")
err = conn.Broadcast(func(w io.Writer) error {
return builder.SendEntitiesDiffToClients(w, ctx.Entity.Flush())
})
if err != nil {
return err
}
// Send new entity to this client
err = conn.Write(func(w io.Writer) error {
return builder.SendEntityCreate(w, ctx.Clock.GetRelativeTick(), session.Entity)
})
if err != nil {
return err
}
// Mark the io as ready
// It will now receive all broadcasts